Locking device for removable wheels



L. ROUANET LOCKING DEVICE FOR REMOVBLE WHEELS Nov. I10, 1925. l 1,561,026

Filed April l1. 1922 www 1 Nov.. 19, 1925.,

.eineg LOtS RO'ANET, OF VRYJEQRT, FRANCE, AESGNOR T0 CMPAGNE DAPPLA- TINS MECANIQUES, OF PARXS, FRANCE,

LOCKING DEVICE FOB. REMOVABLE VHEELS.

Application filed April 11, 1922.

To all whom t may concer/11,.'

Be it known that l, LoUrs Ronann'r, citizen of the French Republic, residing at Ivry-Port, Seine, in the Republic of France,

have invented new and useful lrnprovements in Locking Devices tor Removable Wheels, ot which the following is a specif fication.

The present invention relates to a locking device for removable wheels ot the type in `which an external removable hub is mounted like a sleeve upon a permanent internal hub, these two hubs being adapted to rotate as a whole. In this type of wheel,

the external hub is fixed to the internal hub by means of a central nut.

One of the principal characteristics ot' the invention resides in that the central nut is locked in position by a spring actuated rod 2G which is adapted to slide in a direction at right angles to the axis ot the wheel in diametrieally opposite holes provided in the central nut, said rod being provided with teeth which engage preferably at two diametrically opposite points with a set oiI teeth provided on the outer hub.

The locking is provided by means oitl a locking rod comprising two teeth entering two diametrically opposite recesses of the 24U toothed outer end of the removable hub;

under these conditions the efforts 'frointhe removable hubA upon the locking rod are exerted in two opposite directions and said rod has no tendency to rotate about its own es axis.

The invention will be better understood by referring to the accompanying drawing which is given by way oi example and wherein: u

1G Fig. 1 is a view in axial section ot the locking device in the unlocked position.

Fig. 2 is a similar view in the locked position.

Fig 3 is a partial cross section accordin to A-A, Fig. 2, seen trom the interior, the central nut and the means for controlling the locking rod being not shown.

Fig. 4 is an elevation of the locking rod showing its laterally outer portion.

00 1 represents the permanent internal hub which is permanently secured to the axle, not shown, and is provided with an inner screw-thread 2.

V3 indicates the removable external hub having at its cuter part a male conical por- Serial No. 551,681.

tion et ending in an annular part 5 at the end whereof are torined locking teeth 6.

The tightening nut which contains the elements providing tor the locking, is bored perpendicular to the anis of the wheel, so as to torni two diametrically opposite holes@ and 9 which are adapted to properly guide a locking rod 10.

ln the example represented, the rod 10 is cylindricaly and has a tooth at each end. These teeth 11 and 12, in the looking position 2), engage the toothed part 6 ot the external hub, at two diametrically opposite points.

As shown, the teeth 11 and 12 are located respectively in recesses 19 and 2O provided in the rod 10, whereby the general cylindrical shape oit the rod is not alfected. The recesses 19 and 2O are so dimensioned that they provide a tree passage for the teeth when the rod 10 is in the unlocked position (Fig. 1).

The tooth 6 which is in contact with the tooth 11 of the rod 10 tends to rotate the latter in one direction about its axis, while the tooth 6 which is in contact with the tooth 12 tends to rotate the rod in the opposite direction; the rod has thus no tendency to rotate about its axis.

The rod is held in the locking position by a spring 13 bearing at one end at 14 upon the internal surface of the nut and at the other end acting upon a small cup 15 maintained on the bolt 10 by a pin 16 or by a screw or like element.

The unlocked position can be obtained by means of any suitable wrench, and especially by means otl an ordinary wrench with stud.

The head ot a stud 17 screwed into the nut 7 engages a inortise 18 in the rod 10 in order to guide said rod. An aperture 18 afords communication between the recess 2O and the mortise 18 and permits screwing the stud 17 in place in assembling the dew vice.

Having now described my invention, what l claim as new andv desire to secure by Letters Patent is:

1. f1 locking device tor removable wheels comprising in combination an inner permanent hub, an outer removable hub, a central nut screwed into the inner hub and securing the outerv lhub on the inner liub, a rod adapted to slide in a direction at right angles to the axis ot the hubs in diametrilll cally opposite holes provided in the nut, n spring eontroiiingseid rod, e set of teeth provided on the outer hub and teeth on seid rod adapted to engage with said set of teeth at two dielnetiioally opposite points.

2. A looking device for removable Wheels comprising in Combination an inner germenent hulo7 en outer removable hub, d centrali nut Screwed into the inner hub and securing the outer hub on the inner huh, a cylindrical rod adopted to slide in e direction t` Irigl'it engies to the axis of the hnbe in die metrieally o`^poeite holes provided in the central nut, e spring controiling seid rod, e set of teeth 'provided on the outer hub, reoeeses formed in seid rod and teeth eut on the rod in Suid recesses in en axial plane the rod, and adapted to engeje with said set of teeth at two dieinetrieeily opposite points.

3. i looking device for removable -wheele` Comprising in combination en inner perinanent hub7 en outer removable hub, a central nut screwed into the inner hub and seeurin Y the outer hub on the inner hule7 e cylindrical', rod adapted to slide in a direction at right anglee to the exis of the hubs in diametrically opposite holes provided in the central nut, e spring controlling seid rod, a set oi teeth rovided on the outer huh, recesses formed .in seid rod, teeth out on the rod in said reeeseee in un axial phuie of the rod and edziptedto engage with said Set olf' teeth et two diametrieally opposite points7 a longitudinzii inortise in said rod and :i guiding stud Carried by the nutend adapted to engage into Seid inortse.

n testimony whereof l have signed my naine to this specification.

LOUIS ROUANET. 

